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ARTICLE
Streptomyces PRIO41 as plant growth promoter of jalapeño pepper plants and as biocontrol agent of Fusarium
Robles-Hernández L, J Hernández-Huerta, AC González-Franco, OA Hernández-Rodríguez, A Núñez-Barrios, R Pérez-Leal
Facultad de Ciencias Agrotecnológicas, Universidad Autónoma de Chihuahua, Ciudad Universitaria s/n campus I, Chihuahua Chih., México. C.P. 31310.
* Corresponding Authors:Address Correspondence to: Ph.D. Ana Cecilia González Franco, Tel: 52 (614) 439-1844 ext. 3119; e-mail: ;
Phyton-International Journal of Experimental Botany 2015, 84(2), 253-261. https://doi.org/10.32604/phyton.2015.84.253
Abstract
Chili pepper is one of the main crops of economic importance in Mexico, and
Fusarium wilting is a disease that limits its production. In addition, the inappropriate use of agrochemicals in farming activities generate environmental and health problems. Therefore, in this study the effectiveness of
Streptomyces sp PRIO41 was evaluated as a (1) biocontrol agent of
Fusarium spp and (2) plant growth promoter bacteria. Assays of pathogenicity and virulence of
Fusarium spp. in jalapeño pepper seeds, and interactions of these pathogens with
Streptomyces PRIO41 were evaluated under two nutritional conditions. In the greenhouse, the effectiveness of
Streptomyces sp. PRIO41 was determined as a (1) biocontrol of
Fusarium, and (2) plant growth promoter of wilt of pepper plants. The results showed that all fungal isolates caused symptoms in pepper seeds and seedlings with different degrees of virulence. Interactions
in vitro showed that
Streptomyces showed the most effective range of virulence against
Fusarium isolates in the poor medium (37.6%-100%), with fungicidal effects in some cases. In the greenhouse,
Streptomyces PRIO41 reduced
Fusarium wilting up to a 40%, and positively affected all vegetative growth parameters, particularly plant height, leaf area, root length, and leaf and root dry biomasses. This study showed the potential of
Streptomyces PRIO41 as a biocontrol agent of
Fusarium spp., and as a biofertilizer of pepper plants.
Keywords
Cite This Article
L, R., Hernández-Huerta, J., González-Franco, A., Hernández-Rodríguez, O., Núñez-Barrios, A. et al. (2015).
Streptomyces PRIO41 as plant growth promoter of jalapeño pepper plants and as biocontrol agent of
Fusarium.
Phyton-International Journal of Experimental Botany, 84(2), 253–261. https://doi.org/10.32604/phyton.2015.84.253